The 8 Best Smart Thermostats With Motion Detection of 2026

The ecobee Smart Sensor 2-Pack consists of compact sensors that monitor temperature and occupancy in key rooms, wirelessly communicating with your ecobee smart thermostat up to 60 feet away. Ideal for homeowners with ecobee thermostats who want consistent comfort without manual adjustments, these sensors excel in multi-room homes where temperature varies.

Standout features include infrared occupancy detection for automatic thermostat tweaks, energy savings by idling when rooms are empty, and smart security with motion alerts via the ecobee app. In real-world use, they prevent overnight hot or cold spots in bedrooms and provide peace of mind with activity notifications, making daily life more efficient and secure.

Design is sleek with a satin-steel magnetic stand or self-adhesive wall mounts for hassle-free placement. Build quality feels premium and unobtrusive, blending into any decor while maintaining reliable performance through walls and floors.

Potential drawbacks include dependency on an ecobee thermostat and a subscription for full security features, plus the need for elevated mounting. Overall, this 2-pack delivers exceptional value for smarter home climate control.

Verdict: Highly recommended for ecobee users seeking comfort, savings, and security in one device.

Occupancy and temperature sensing with 60-foot wireless range.

Automatic thermostat adjustments for room-specific comfort.

Energy savings through presence detection.

Smart security motion alerts via app (subscription required).

Easy magnetic or adhesive installation above 5 feet.

The ecobee Smart Thermostat Premium is an advanced WiFi thermostat designed for homeowners who want intelligent climate control, energy savings, and home health insights. Paired with an included SmartSensor, it focuses on rooms that matter most, using radar technology and geofencing to detect occupancy and adjust temperatures automatically. Perfect for tech-savvy users integrating with Alexa, Google Assistant, Siri, or HomeKit, it transforms basic HVAC into a smart system.

Standout features include a built-in air quality monitor that alerts to poor conditions and suggests fixes, plus eco+ algorithms proven to cut heating and cooling costs by up to 26% compared to a constant 72°F hold. In real-world use, the SmartSensor eliminates uneven temperatures, while security perks like smoke alarm detection and open window alerts add peace of mind. Voice control via built-in speakers handles adjustments and entertainment seamlessly.

Design shines with premium metal siding, a large vibrant display, and intuitive interface. Installation is straightforward for most 24VAC systems thanks to the included Power Extender Kit and trim kit, though a compatibility check is essential. Drawbacks include subscription needs for full security and exclusions for certain HVAC types.

Overall, this thermostat excels in balancing comfort, savings, and smart features, earning top marks for modern homes. Verdict: Highly recommended for energy-conscious buyers seeking premium smart home upgrades.

The Premium model tops the lineup with built-in air quality monitoring, radar sensors, and up to 26% savings, outpacing the Enhanced (no AQM, similar savings) and Essential (23% savings, fewer integrations). It offers the broadest HVAC compatibility at 95% and includes PEK/trim kit standard.

Key edges: Siri/Alexa built-in, doorbell live view compatibility, and advanced accessories support make it future-proof for expanding smart ecosystems.

Compatible with 95% of 24VAC HVAC: furnaces, ACs (2H/2C), heat pumps (2H/2C + AUX), boilers, PTACs, fan coils. Wires: RC, RH, W1/W2, Y1/Y2, C, O/B, G, ACC+. Use ecobee's online checker for your setup. PEK included for no C-wire homes; avoids line voltage (110/220V), millivolt, 0-10VDC systems.

The Sensi ST55 smart thermostat brings professional-grade HVAC control to everyday homeowners through a simple Wi-Fi enabled device. Designed for those upgrading to a smart home without hassle, it works with most residential systems and emphasizes data privacy alongside energy efficiency. Ideal for tech-savvy renters or owners seeking control via app or voice with Alexa.

Standout features include easy DIY installation using step-by-step app instructions and a built-in level, often without a common wire. It delivers flexible scheduling, remote access, usage reports, and smart maintenance alerts to optimize performance and catch issues early. Energy Star certification supports about 23% savings on bills, proven through real-world flexible programming and system monitoring.

Build quality reflects 100 years of Sensi expertise, with a straightforward design that mimics traditional thermostats, complete with buttons, backlight, and keypad lockout. It integrates smoothly without altering wall spaces, ensuring a clean look.

Drawbacks include potential c-wire needs for certain systems and reliance on 2.4 GHz Wi-Fi. Still, its reliability and privacy focus outweigh these for most users.

Verdict: A top choice for effortless smart thermostat upgrade, balancing ease, savings, and security effectively.

Model: ST55

Power Source: Battery or C-wire

Connectivity: 2.4 GHz Wi-Fi

Dimensions: 5.875 x 3.75 x 1.0 inches

Features: Remote access, usage reports, Energy Star certified, smart alerts, keypad lockout, backlight display

Compatibility: Most residential HVAC, works with Alexa

The ecobee Smart Thermostat Essential is a programmable Wi-Fi thermostat designed for homeowners looking to cut energy costs without sacrificing comfort. Energy Star certified, it works with 85% of home HVAC systems, including gas, oil, electric, and heat pumps. Ideal for those integrating into smart homes with Siri, Alexa, or Google Assistant, it automatically adjusts temperatures based on your schedule, saving up to 23% on bills compared to constant 72-degree holds.

Standout features include eco+ smart algorithms for humidity detection, schedule optimization, and time-of-use precooling or preheating during cheaper energy periods. Users control it via a vibrant color touchscreen or the ecobee app, which tracks usage on the go. Real-world performance shines in maintaining even comfort while reducing waste, with free software updates ensuring long-term reliability.

Design is sleek and modern, with easy DIY installation; a Power Extender Kit handles no-C-wire setups. Build quality feels premium, and optional SmartSensors add room-by-room precision. Drawbacks include needing to verify system compatibility online and separate purchases for accessories like the PEK or sensors.

Overall, this thermostat delivers proven savings and smart convenience, earning its solid reputation for value-driven smart home upgrades. Recommended for budget-conscious users prioritizing efficiency.

Works with most 24 VAC HVAC: gas, oil, electric, dual fuel, forced air (2H/1C or 1H/2C conventional; 2H/1C heat pump), and boilers. Use ecobee's online Compatibility Checker for your system.

Integrates with Apple HomeKit, Google Assistant, Alexa. Add SmartSensors for multi-room control (sold separately).

The ecobee Smart Thermostat Enhanced is a programmable WiFi thermostat designed for homeowners looking to upgrade their HVAC control with smart automation. It targets those with compatible 24VAC systems who want energy savings without sacrificing comfort, integrating smoothly into Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings ecosystems.

Standout features include eco+ algorithms that save up to 26% on bills by adjusting temperatures when away or asleep, plus radar occupancy sensing for wider detection and preemptive adjustments. In real-world use, it learns schedules and humidity preferences, ensuring your home is ideal upon return, while SmartSensors expand room-specific control.

Build quality shines with a hardwired setup for reliability over 10 years, no battery replacements needed, and a clean design with included PEK and Trim Kit for straightforward DIY installs on most systems.

Potential drawbacks include needing the compatibility checker for non-standard HVAC like high-voltage setups, and it's not as feature-rich as premium models with air quality monitoring.

Overall, this thermostat delivers reliable smart comfort and savings, making it a strong choice for efficient smart homes.

Check compatibility with up to 90% of 24VAC HVAC systems using RC, RH, W1, W2, Y1, Y2, C, O/B, PEK+, G, ACC+, ACC-. Includes Power Extender Kit for homes without C-wire and Trim Kit.

Incompatible with line voltage (110/220V), millivolt, or 0-10VDC systems. Use ecobee's online checker and input your wire labels for confirmation.

Supports gas, oil, electric, dual fuel, forced air (2H/2C), heat pumps (3H/2C), and boilers.

WiFi: Dual-Band. Voice: Siri, Alexa, Google Assistant, HomeKit. Warranty: 3 Years. Sensors: Radar occupancy. Energy: Up to 26% savings vs. 72°F hold. Install: DIY with PEK included.

The Honeywell Home T9 WiFi Smart Thermostat with one Smart Room Sensor is designed for homeowners seeking advanced, room-specific climate control in smart homes. It excels at delivering personalized comfort by monitoring temperature and humidity in prioritized areas like bedrooms or offices, making it ideal for families with varying room needs or those aiming to cut energy costs.

Standout features include Smart Room Sensors with 200-foot range and advanced motion detection that automatically focus on occupied rooms, balancing temperatures across multiple spaces for efficient whole-home comfort. Real-world performance shines with geofencing for auto home/away adjustments, app-based scheduling, and voice control via Alexa, Google Assistant, or Apple HomeKit, ensuring seamless integration and responsive operation.

The touchscreen display offers a graphical interface for easy multi-room viewing, while the sleek white design (3.7 x 4.92 x 0.94 inches) blends into modern decor. Build quality feels premium with reliable WiFi on 2.4GHz and 5GHz bands, and DIY installation is straightforward: wire to the wall plate, snap on the unit, and follow on-screen setup.

Potential drawbacks include the need for a C-wire or adapter in older homes and incompatibility with electric baseboard heat. Additional sensors are required for more than one room, adding to the investment.

Overall, the T9 delivers exceptional value for smart home enthusiasts wanting precise, energy-efficient control. It earns high marks for innovation and ease, making it a top choice over basic models.

Dimensions: 3.7 x 4.92 x 0.94 inches. Display: Graphical color touchscreen. WiFi: 2.4GHz and 5GHz. Sensors: Includes 1 Smart Room Sensor (up to 200ft range). Compatibility: Forced air, hot water, steam, heat pumps (C-wire required or adapter). Voice: Alexa, Google Assistant, Apple HomeKit. Auto features: Home/away geofencing, occupancy detection.

Best for multi-room homes needing precise control. Check HVAC compatibility first (no electric baseboard). Ideal upgrade from basic WiFi thermostats. Expand with extra sensors for larger spaces. Verify C-wire presence or use included adapter for easy install.

The Amazon Smart Thermostat serves as an accessible upgrade for anyone with a standard HVAC system seeking smarter home climate control. It targets Alexa users who want to optimize energy use without complexity, particularly those in homes with multiple rooms or varying occupancy.

Standout features include comfort zones that leverage select Echo devices or the Amazon Smart Air Quality Monitor for presence-based adjustments, alongside Alexa-driven routines for home, away, and sleep settings. Real-world performance shines in automatic optimizations that align with daily habits, potentially saving significant energy as per EPA estimates, with on-the-go app control adding convenience.

Design emphasizes reliability, drawing on Honeywell Home's 130 years of thermostat expertise for a sturdy, no-frills build that prioritizes function over flash. Installation is app-guided for DIY confidence, though professional assistance remains an option.

Drawbacks include the C-wire requirement, which may complicate retrofits in older homes, and reliance on Alexa devices for advanced zoning. Without them, core functions still work but lack multi-room smarts.

Overall, this thermostat delivers strong value for energy-conscious Alexa households, balancing savings, simplicity, and smart features effectively. Highly recommended if your setup matches its needs.

The Alexa app provides step-by-step guidance for setup, making it approachable for most users. Verify your system has a C-wire before purchasing to avoid surprises.

If wiring proves tricky, Amazon customer service offers support, or hire a professional for peace of mind. Post-install, explore rebate emails from energy providers to maximize savings.

The Honeywell Home X7S Smart Thermostat is designed for busy households that want effortless comfort and energy savings. It features built-in occupancy sensing to detect when you are home or away, automatically adjusting settings via the Auto Away feature to maintain ideal temperatures without manual input. Perfect for those integrating into a smart home ecosystem, it works with Amazon Alexa, Google Assistant, Apple Home, and the First Alert app for remote control.

Standout features include precision humidity monitoring and control, which helps keep indoor air fresh and comfortable, especially in varying climates. The 4.3-inch touchscreen offers customizable colors and styles for better visibility and personalization. In real-world use, it excels at energy efficiency, being ENERGY STAR certified, and supports a range of systems like heat pumps and conventional setups, though it pairs best with Honeywell Home Room Sensors for whole-home precision.

Build quality shines with a sleek black design that blends into modern interiors. Installation requires a C-wire, but a free adapter voucher is included, making setup straightforward for most users. While it delivers reliable performance, note that full humidity functionality may need extra HVAC accessories.

Drawbacks are minor: incompatibility with electric baseboard heat and potential need for add-ons limit versatility for some homes. Overall, the X7S earns high marks for innovation and savings, making it a top choice for tech-savvy homeowners seeking a smarter thermostat.

Display: 4.3-inch customizable touchscreen. Compatibility: Up to 3 heat/2 cool heat pumps with electric backup or 2 heat/2 cool conventional systems; WiFi 2.4/5.0 GHz required; Matter certified. Features: Occupancy sensing, humidity monitoring/control, remote app control. Does not support electric baseboard heat (120-240V).